/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:48:28,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:48:28,172 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 23:48:28,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:48:28,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:48:28,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:48:28,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:48:28,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:48:28,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:48:28,200 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:48:28,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:48:28,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:48:28,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:48:28,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:48:28,201 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:48:28,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:48:28,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:48:28,202 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:48:28,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:48:28,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:48:28,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:48:28,203 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:48:28,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:48:28,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:48:28,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:48:28,445 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:48:28,447 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:48:28,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2025-04-13 23:48:29,814 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd3f7fb70/d0fd141b2bbe4f52bb4b077b29253774/FLAG16e3ac966 [2025-04-13 23:48:30,059 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:48:30,059 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2025-04-13 23:48:30,067 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd3f7fb70/d0fd141b2bbe4f52bb4b077b29253774/FLAG16e3ac966 [2025-04-13 23:48:30,865 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd3f7fb70/d0fd141b2bbe4f52bb4b077b29253774 [2025-04-13 23:48:30,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:48:30,868 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:48:30,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:48:30,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:48:30,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:48:30,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:48:30" (1/1) ... [2025-04-13 23:48:30,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278298d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:30, skipping insertion in model container [2025-04-13 23:48:30,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:48:30" (1/1) ... [2025-04-13 23:48:30,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:48:31,191 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2025-04-13 23:48:31,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:48:31,205 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:48:31,244 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2025-04-13 23:48:31,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:48:31,273 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:48:31,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31 WrapperNode [2025-04-13 23:48:31,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:48:31,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:48:31,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:48:31,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:48:31,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,304 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-04-13 23:48:31,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:48:31,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:48:31,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:48:31,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:48:31,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,329 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 23:48:31,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,332 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:48:31,345 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:48:31,345 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:48:31,345 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:48:31,346 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (1/1) ... [2025-04-13 23:48:31,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:48:31,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:31,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 23:48:31,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 23:48:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 23:48:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:48:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:48:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:48:31,397 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:48:31,490 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:48:31,491 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:48:31,602 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:48:31,602 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:48:31,602 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:48:31,688 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:48:31,692 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:48:31,695 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:48:31,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:48:31 BoogieIcfgContainer [2025-04-13 23:48:31,695 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:48:31,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:48:31,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:48:31,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:48:31,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:48:30" (1/3) ... [2025-04-13 23:48:31,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39288593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:48:31, skipping insertion in model container [2025-04-13 23:48:31,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:31" (2/3) ... [2025-04-13 23:48:31,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39288593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:48:31, skipping insertion in model container [2025-04-13 23:48:31,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:48:31" (3/3) ... [2025-04-13 23:48:31,701 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-04-13 23:48:31,711 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:48:31,712 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 18 locations, 19 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 23:48:31,712 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:48:31,746 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:48:31,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 50 flow [2025-04-13 23:48:31,792 INFO L116 PetriNetUnfolderBase]: 4/19 cut-off events. [2025-04-13 23:48:31,793 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:48:31,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 19 events. 4/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2025-04-13 23:48:31,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 50 flow [2025-04-13 23:48:31,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 19 transitions, 44 flow [2025-04-13 23:48:31,807 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:48:31,819 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ecdcc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:48:31,819 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:48:31,825 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:48:31,828 INFO L116 PetriNetUnfolderBase]: 4/17 cut-off events. [2025-04-13 23:48:31,828 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:48:31,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:31,829 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:31,829 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:31,833 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash -272227646, now seen corresponding path program 1 times [2025-04-13 23:48:31,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:31,838 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828501091] [2025-04-13 23:48:31,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:31,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 23:48:31,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 23:48:31,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:31,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:32,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:32,181 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828501091] [2025-04-13 23:48:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828501091] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:48:32,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:48:32,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:48:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484319624] [2025-04-13 23:48:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:48:32,190 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 23:48:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:32,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 23:48:32,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 23:48:32,210 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:32,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:32,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:32,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:32,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:32,437 INFO L116 PetriNetUnfolderBase]: 237/370 cut-off events. [2025-04-13 23:48:32,438 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 23:48:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 370 events. 237/370 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1122 event pairs, 45 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 744. Up to 233 conditions per place. [2025-04-13 23:48:32,445 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 25 selfloop transitions, 4 changer transitions 17/46 dead transitions. [2025-04-13 23:48:32,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 46 transitions, 190 flow [2025-04-13 23:48:32,449 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:48:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 23:48:32,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2025-04-13 23:48:32,461 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2025-04-13 23:48:32,462 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 44 flow. Second operand 6 states and 68 transitions. [2025-04-13 23:48:32,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 46 transitions, 190 flow [2025-04-13 23:48:32,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 23:48:32,470 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 65 flow [2025-04-13 23:48:32,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2025-04-13 23:48:32,475 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2025-04-13 23:48:32,476 INFO L485 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 65 flow [2025-04-13 23:48:32,476 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:32,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:32,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:32,476 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:48:32,476 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:32,476 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash 396254466, now seen corresponding path program 1 times [2025-04-13 23:48:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:32,477 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632614377] [2025-04-13 23:48:32,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:32,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 23:48:32,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 23:48:32,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:32,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:32,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:32,615 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632614377] [2025-04-13 23:48:32,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632614377] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:48:32,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:48:32,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 23:48:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845899692] [2025-04-13 23:48:32,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:48:32,616 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 23:48:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:32,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 23:48:32,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:48:32,616 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:32,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 65 flow. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:32,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:32,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:32,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:32,822 INFO L116 PetriNetUnfolderBase]: 295/480 cut-off events. [2025-04-13 23:48:32,822 INFO L117 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2025-04-13 23:48:32,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 480 events. 295/480 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1650 event pairs, 41 based on Foata normal form. 24/418 useless extension candidates. Maximal degree in co-relation 1169. Up to 219 conditions per place. [2025-04-13 23:48:32,825 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 43 selfloop transitions, 9 changer transitions 19/71 dead transitions. [2025-04-13 23:48:32,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 71 transitions, 357 flow [2025-04-13 23:48:32,826 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 23:48:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 23:48:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-04-13 23:48:32,827 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2025-04-13 23:48:32,827 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 65 flow. Second operand 9 states and 86 transitions. [2025-04-13 23:48:32,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 71 transitions, 357 flow [2025-04-13 23:48:32,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 71 transitions, 341 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-04-13 23:48:32,831 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 150 flow [2025-04-13 23:48:32,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2025-04-13 23:48:32,832 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2025-04-13 23:48:32,832 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 150 flow [2025-04-13 23:48:32,832 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:32,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:32,832 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:32,832 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:48:32,833 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:32,833 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash 396744576, now seen corresponding path program 2 times [2025-04-13 23:48:32,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:32,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523509860] [2025-04-13 23:48:32,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:48:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:32,845 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-04-13 23:48:32,851 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 23:48:32,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 23:48:32,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:32,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:32,957 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523509860] [2025-04-13 23:48:32,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523509860] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:48:32,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:48:32,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 23:48:32,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311786838] [2025-04-13 23:48:32,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:48:32,958 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 23:48:32,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:32,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 23:48:32,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:48:32,959 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:32,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:32,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:32,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:32,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:33,121 INFO L116 PetriNetUnfolderBase]: 256/429 cut-off events. [2025-04-13 23:48:33,122 INFO L117 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2025-04-13 23:48:33,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 429 events. 256/429 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1515 event pairs, 41 based on Foata normal form. 39/386 useless extension candidates. Maximal degree in co-relation 1329. Up to 208 conditions per place. [2025-04-13 23:48:33,126 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 38 selfloop transitions, 9 changer transitions 25/72 dead transitions. [2025-04-13 23:48:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 478 flow [2025-04-13 23:48:33,127 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 23:48:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 23:48:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2025-04-13 23:48:33,127 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2025-04-13 23:48:33,127 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 150 flow. Second operand 8 states and 76 transitions. [2025-04-13 23:48:33,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 478 flow [2025-04-13 23:48:33,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-13 23:48:33,133 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 204 flow [2025-04-13 23:48:33,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2025-04-13 23:48:33,134 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 24 predicate places. [2025-04-13 23:48:33,134 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 204 flow [2025-04-13 23:48:33,134 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:33,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:33,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:33,135 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:48:33,135 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:33,135 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1129004876, now seen corresponding path program 1 times [2025-04-13 23:48:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:33,135 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129113140] [2025-04-13 23:48:33,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:33,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 23:48:33,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 23:48:33,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:33,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:33,265 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129113140] [2025-04-13 23:48:33,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129113140] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:48:33,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:48:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:48:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148571882] [2025-04-13 23:48:33,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:48:33,266 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 23:48:33,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:33,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 23:48:33,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 23:48:33,266 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:33,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:33,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:33,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:33,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:33,470 INFO L116 PetriNetUnfolderBase]: 274/453 cut-off events. [2025-04-13 23:48:33,470 INFO L117 PetriNetUnfolderBase]: For 1315/1315 co-relation queries the response was YES. [2025-04-13 23:48:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 453 events. 274/453 cut-off events. For 1315/1315 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1584 event pairs, 53 based on Foata normal form. 18/381 useless extension candidates. Maximal degree in co-relation 1557. Up to 211 conditions per place. [2025-04-13 23:48:33,473 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 46 selfloop transitions, 16 changer transitions 17/79 dead transitions. [2025-04-13 23:48:33,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 573 flow [2025-04-13 23:48:33,473 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 23:48:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-13 23:48:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2025-04-13 23:48:33,474 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2025-04-13 23:48:33,474 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 204 flow. Second operand 11 states and 95 transitions. [2025-04-13 23:48:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 573 flow [2025-04-13 23:48:33,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 506 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-04-13 23:48:33,479 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 273 flow [2025-04-13 23:48:33,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=273, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2025-04-13 23:48:33,479 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2025-04-13 23:48:33,479 INFO L485 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 273 flow [2025-04-13 23:48:33,480 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:33,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:33,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:33,480 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 23:48:33,480 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:33,480 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1124046116, now seen corresponding path program 2 times [2025-04-13 23:48:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:33,480 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337658488] [2025-04-13 23:48:33,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:48:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:33,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-04-13 23:48:33,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 23:48:33,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 23:48:33,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:33,588 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337658488] [2025-04-13 23:48:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337658488] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:48:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:48:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:48:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195262609] [2025-04-13 23:48:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:48:33,588 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 23:48:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:33,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 23:48:33,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-13 23:48:33,589 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:33,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:33,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:33,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:33,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:33,761 INFO L116 PetriNetUnfolderBase]: 445/732 cut-off events. [2025-04-13 23:48:33,761 INFO L117 PetriNetUnfolderBase]: For 2713/2713 co-relation queries the response was YES. [2025-04-13 23:48:33,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 732 events. 445/732 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2894 event pairs, 31 based on Foata normal form. 27/597 useless extension candidates. Maximal degree in co-relation 2638. Up to 253 conditions per place. [2025-04-13 23:48:33,765 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 57 selfloop transitions, 20 changer transitions 21/98 dead transitions. [2025-04-13 23:48:33,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 757 flow [2025-04-13 23:48:33,765 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 23:48:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-13 23:48:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2025-04-13 23:48:33,766 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2025-04-13 23:48:33,766 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 273 flow. Second operand 11 states and 106 transitions. [2025-04-13 23:48:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 757 flow [2025-04-13 23:48:33,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 691 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-04-13 23:48:33,772 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 370 flow [2025-04-13 23:48:33,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=370, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2025-04-13 23:48:33,772 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 40 predicate places. [2025-04-13 23:48:33,772 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 370 flow [2025-04-13 23:48:33,772 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:33,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:33,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:33,773 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 23:48:33,773 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:33,773 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1898509928, now seen corresponding path program 3 times [2025-04-13 23:48:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:33,773 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739997935] [2025-04-13 23:48:33,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:48:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:33,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 12 statements into 1 equivalence classes. [2025-04-13 23:48:33,780 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 23:48:33,780 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 23:48:33,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:33,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:33,867 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739997935] [2025-04-13 23:48:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739997935] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:48:33,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:48:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:48:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942562519] [2025-04-13 23:48:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:48:33,868 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 23:48:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:33,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 23:48:33,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 23:48:33,868 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:33,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:33,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:33,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:33,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:34,055 INFO L116 PetriNetUnfolderBase]: 418/696 cut-off events. [2025-04-13 23:48:34,055 INFO L117 PetriNetUnfolderBase]: For 4269/4269 co-relation queries the response was YES. [2025-04-13 23:48:34,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 696 events. 418/696 cut-off events. For 4269/4269 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2723 event pairs, 37 based on Foata normal form. 45/585 useless extension candidates. Maximal degree in co-relation 2917. Up to 154 conditions per place. [2025-04-13 23:48:34,060 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 45 selfloop transitions, 25 changer transitions 31/101 dead transitions. [2025-04-13 23:48:34,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 950 flow [2025-04-13 23:48:34,061 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 23:48:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-13 23:48:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2025-04-13 23:48:34,061 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2025-04-13 23:48:34,061 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 370 flow. Second operand 11 states and 103 transitions. [2025-04-13 23:48:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 950 flow [2025-04-13 23:48:34,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 101 transitions, 879 flow, removed 26 selfloop flow, removed 5 redundant places. [2025-04-13 23:48:34,071 INFO L231 Difference]: Finished difference. Result has 70 places, 45 transitions, 469 flow [2025-04-13 23:48:34,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=469, PETRI_PLACES=70, PETRI_TRANSITIONS=45} [2025-04-13 23:48:34,073 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 48 predicate places. [2025-04-13 23:48:34,073 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 45 transitions, 469 flow [2025-04-13 23:48:34,073 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:34,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:34,073 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:34,073 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 23:48:34,073 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:34,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash 599557581, now seen corresponding path program 1 times [2025-04-13 23:48:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:34,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186282794] [2025-04-13 23:48:34,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:34,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 23:48:34,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 23:48:34,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:34,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:34,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:34,194 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186282794] [2025-04-13 23:48:34,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186282794] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:34,194 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276524738] [2025-04-13 23:48:34,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:34,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:34,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:34,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 23:48:34,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 23:48:34,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 23:48:34,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:34,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:34,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 23:48:34,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:34,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276524738] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:34,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-04-13 23:48:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579358223] [2025-04-13 23:48:34,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:34,433 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 23:48:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:34,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 23:48:34,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:48:34,434 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:34,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 45 transitions, 469 flow. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:34,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:34,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:34,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:34,757 INFO L116 PetriNetUnfolderBase]: 526/876 cut-off events. [2025-04-13 23:48:34,757 INFO L117 PetriNetUnfolderBase]: For 9194/9194 co-relation queries the response was YES. [2025-04-13 23:48:34,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4259 conditions, 876 events. 526/876 cut-off events. For 9194/9194 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3223 event pairs, 125 based on Foata normal form. 63/735 useless extension candidates. Maximal degree in co-relation 4223. Up to 489 conditions per place. [2025-04-13 23:48:34,761 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 67 selfloop transitions, 17 changer transitions 64/148 dead transitions. [2025-04-13 23:48:34,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 148 transitions, 1529 flow [2025-04-13 23:48:34,762 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 23:48:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-13 23:48:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 171 transitions. [2025-04-13 23:48:34,763 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-04-13 23:48:34,763 INFO L175 Difference]: Start difference. First operand has 70 places, 45 transitions, 469 flow. Second operand 19 states and 171 transitions. [2025-04-13 23:48:34,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 148 transitions, 1529 flow [2025-04-13 23:48:34,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 148 transitions, 1430 flow, removed 33 selfloop flow, removed 8 redundant places. [2025-04-13 23:48:34,772 INFO L231 Difference]: Finished difference. Result has 90 places, 51 transitions, 598 flow [2025-04-13 23:48:34,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=598, PETRI_PLACES=90, PETRI_TRANSITIONS=51} [2025-04-13 23:48:34,772 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2025-04-13 23:48:34,772 INFO L485 AbstractCegarLoop]: Abstraction has has 90 places, 51 transitions, 598 flow [2025-04-13 23:48:34,773 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:34,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:34,773 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:34,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 23:48:34,975 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:34,975 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:34,975 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1470018493, now seen corresponding path program 2 times [2025-04-13 23:48:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:34,976 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315436225] [2025-04-13 23:48:34,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:48:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:34,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 23:48:34,985 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 23:48:34,986 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:48:34,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:35,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:35,054 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315436225] [2025-04-13 23:48:35,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315436225] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:35,054 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605511660] [2025-04-13 23:48:35,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:48:35,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:35,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:35,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 23:48:35,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 23:48:35,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 23:48:35,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:48:35,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:35,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 23:48:35,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:35,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605511660] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:35,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-04-13 23:48:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779455284] [2025-04-13 23:48:35,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:35,223 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 23:48:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:35,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 23:48:35,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:48:35,224 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:35,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 51 transitions, 598 flow. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:35,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:35,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:35,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:35,752 INFO L116 PetriNetUnfolderBase]: 814/1353 cut-off events. [2025-04-13 23:48:35,752 INFO L117 PetriNetUnfolderBase]: For 33785/33785 co-relation queries the response was YES. [2025-04-13 23:48:35,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8664 conditions, 1353 events. 814/1353 cut-off events. For 33785/33785 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5685 event pairs, 51 based on Foata normal form. 72/1095 useless extension candidates. Maximal degree in co-relation 8618. Up to 304 conditions per place. [2025-04-13 23:48:35,762 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 88 selfloop transitions, 47 changer transitions 74/209 dead transitions. [2025-04-13 23:48:35,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 209 transitions, 2776 flow [2025-04-13 23:48:35,762 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 23:48:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-04-13 23:48:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 247 transitions. [2025-04-13 23:48:35,763 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43562610229276894 [2025-04-13 23:48:35,763 INFO L175 Difference]: Start difference. First operand has 90 places, 51 transitions, 598 flow. Second operand 27 states and 247 transitions. [2025-04-13 23:48:35,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 209 transitions, 2776 flow [2025-04-13 23:48:35,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 209 transitions, 2232 flow, removed 261 selfloop flow, removed 12 redundant places. [2025-04-13 23:48:35,794 INFO L231 Difference]: Finished difference. Result has 116 places, 67 transitions, 1001 flow [2025-04-13 23:48:35,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1001, PETRI_PLACES=116, PETRI_TRANSITIONS=67} [2025-04-13 23:48:35,795 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 94 predicate places. [2025-04-13 23:48:35,795 INFO L485 AbstractCegarLoop]: Abstraction has has 116 places, 67 transitions, 1001 flow [2025-04-13 23:48:35,795 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:35,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:35,795 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:35,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 23:48:35,995 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-04-13 23:48:35,996 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:35,996 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash -892279348, now seen corresponding path program 1 times [2025-04-13 23:48:35,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:35,997 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801334497] [2025-04-13 23:48:35,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:35,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:36,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 23:48:36,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:48:36,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:36,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:36,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:36,096 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801334497] [2025-04-13 23:48:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801334497] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:36,096 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916036295] [2025-04-13 23:48:36,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:36,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:36,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:36,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:36,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 23:48:36,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 23:48:36,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:48:36,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:36,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:36,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 23:48:36,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:36,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916036295] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:36,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 23:48:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397624885] [2025-04-13 23:48:36,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:36,281 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 23:48:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:36,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 23:48:36,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-04-13 23:48:36,282 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:36,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 67 transitions, 1001 flow. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:36,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:36,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:36,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:36,851 INFO L116 PetriNetUnfolderBase]: 1048/1758 cut-off events. [2025-04-13 23:48:36,851 INFO L117 PetriNetUnfolderBase]: For 80896/80896 co-relation queries the response was YES. [2025-04-13 23:48:36,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13918 conditions, 1758 events. 1048/1758 cut-off events. For 80896/80896 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7962 event pairs, 131 based on Foata normal form. 63/1377 useless extension candidates. Maximal degree in co-relation 13860. Up to 490 conditions per place. [2025-04-13 23:48:36,866 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 99 selfloop transitions, 51 changer transitions 65/215 dead transitions. [2025-04-13 23:48:36,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 215 transitions, 3605 flow [2025-04-13 23:48:36,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 23:48:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-04-13 23:48:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 232 transitions. [2025-04-13 23:48:36,868 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2025-04-13 23:48:36,869 INFO L175 Difference]: Start difference. First operand has 116 places, 67 transitions, 1001 flow. Second operand 25 states and 232 transitions. [2025-04-13 23:48:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 215 transitions, 3605 flow [2025-04-13 23:48:36,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 215 transitions, 3025 flow, removed 274 selfloop flow, removed 15 redundant places. [2025-04-13 23:48:36,919 INFO L231 Difference]: Finished difference. Result has 132 places, 78 transitions, 1287 flow [2025-04-13 23:48:36,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1287, PETRI_PLACES=132, PETRI_TRANSITIONS=78} [2025-04-13 23:48:36,920 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 110 predicate places. [2025-04-13 23:48:36,920 INFO L485 AbstractCegarLoop]: Abstraction has has 132 places, 78 transitions, 1287 flow [2025-04-13 23:48:36,920 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:36,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:36,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:36,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 23:48:37,121 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:37,121 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:37,121 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 958544518, now seen corresponding path program 2 times [2025-04-13 23:48:37,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:37,121 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062591623] [2025-04-13 23:48:37,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:48:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:37,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 23:48:37,128 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:48:37,128 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:48:37,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:37,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:37,192 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062591623] [2025-04-13 23:48:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062591623] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:37,193 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429378433] [2025-04-13 23:48:37,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:48:37,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:37,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:37,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:37,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 23:48:37,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 23:48:37,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:48:37,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:48:37,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:37,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 23:48:37,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:37,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429378433] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:37,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 23:48:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349098798] [2025-04-13 23:48:37,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:37,342 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 23:48:37,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:37,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 23:48:37,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-04-13 23:48:37,343 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:37,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 78 transitions, 1287 flow. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:37,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:37,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:37,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:38,010 INFO L116 PetriNetUnfolderBase]: 1165/1992 cut-off events. [2025-04-13 23:48:38,010 INFO L117 PetriNetUnfolderBase]: For 130165/130165 co-relation queries the response was YES. [2025-04-13 23:48:38,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16911 conditions, 1992 events. 1165/1992 cut-off events. For 130165/130165 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9274 event pairs, 25 based on Foata normal form. 135/1605 useless extension candidates. Maximal degree in co-relation 16846. Up to 490 conditions per place. [2025-04-13 23:48:38,030 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 92 selfloop transitions, 78 changer transitions 96/266 dead transitions. [2025-04-13 23:48:38,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 266 transitions, 5165 flow [2025-04-13 23:48:38,031 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 23:48:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-04-13 23:48:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 273 transitions. [2025-04-13 23:48:38,032 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-04-13 23:48:38,032 INFO L175 Difference]: Start difference. First operand has 132 places, 78 transitions, 1287 flow. Second operand 30 states and 273 transitions. [2025-04-13 23:48:38,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 266 transitions, 5165 flow [2025-04-13 23:48:38,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 266 transitions, 4402 flow, removed 348 selfloop flow, removed 18 redundant places. [2025-04-13 23:48:38,116 INFO L231 Difference]: Finished difference. Result has 155 places, 99 transitions, 1926 flow [2025-04-13 23:48:38,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1926, PETRI_PLACES=155, PETRI_TRANSITIONS=99} [2025-04-13 23:48:38,117 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 133 predicate places. [2025-04-13 23:48:38,117 INFO L485 AbstractCegarLoop]: Abstraction has has 155 places, 99 transitions, 1926 flow [2025-04-13 23:48:38,117 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:38,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:38,117 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:38,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 23:48:38,317 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:38,318 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:38,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 13680550, now seen corresponding path program 3 times [2025-04-13 23:48:38,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:38,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048062632] [2025-04-13 23:48:38,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:48:38,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:38,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-04-13 23:48:38,330 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:48:38,330 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 23:48:38,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:38,435 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048062632] [2025-04-13 23:48:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048062632] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:38,435 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813372594] [2025-04-13 23:48:38,435 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:48:38,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:38,438 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:38,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 23:48:38,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-04-13 23:48:38,473 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:48:38,473 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 23:48:38,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:38,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:48:38,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:38,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:38,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813372594] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:38,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:38,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-04-13 23:48:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122532634] [2025-04-13 23:48:38,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:38,644 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 23:48:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:38,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 23:48:38,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2025-04-13 23:48:38,645 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:38,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 99 transitions, 1926 flow. Second operand has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:38,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:38,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:39,707 INFO L116 PetriNetUnfolderBase]: 1633/2721 cut-off events. [2025-04-13 23:48:39,707 INFO L117 PetriNetUnfolderBase]: For 247272/247272 co-relation queries the response was YES. [2025-04-13 23:48:39,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26503 conditions, 2721 events. 1633/2721 cut-off events. For 247272/247272 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12024 event pairs, 19 based on Foata normal form. 90/2115 useless extension candidates. Maximal degree in co-relation 26428. Up to 668 conditions per place. [2025-04-13 23:48:39,732 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 142 selfloop transitions, 112 changer transitions 129/383 dead transitions. [2025-04-13 23:48:39,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 383 transitions, 8348 flow [2025-04-13 23:48:39,733 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 23:48:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-04-13 23:48:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 421 transitions. [2025-04-13 23:48:39,734 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4358178053830228 [2025-04-13 23:48:39,734 INFO L175 Difference]: Start difference. First operand has 155 places, 99 transitions, 1926 flow. Second operand 46 states and 421 transitions. [2025-04-13 23:48:39,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 383 transitions, 8348 flow [2025-04-13 23:48:39,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 383 transitions, 7036 flow, removed 626 selfloop flow, removed 20 redundant places. [2025-04-13 23:48:39,866 INFO L231 Difference]: Finished difference. Result has 200 places, 133 transitions, 3020 flow [2025-04-13 23:48:39,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3020, PETRI_PLACES=200, PETRI_TRANSITIONS=133} [2025-04-13 23:48:39,867 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 178 predicate places. [2025-04-13 23:48:39,867 INFO L485 AbstractCegarLoop]: Abstraction has has 200 places, 133 transitions, 3020 flow [2025-04-13 23:48:39,867 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:39,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:39,867 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:39,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 23:48:40,067 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-13 23:48:40,068 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:40,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1073483274, now seen corresponding path program 4 times [2025-04-13 23:48:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:40,068 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518554225] [2025-04-13 23:48:40,068 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:48:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:40,072 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-13 23:48:40,077 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:48:40,077 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:48:40,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:40,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:40,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518554225] [2025-04-13 23:48:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518554225] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:40,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532404666] [2025-04-13 23:48:40,358 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:48:40,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:40,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:40,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:40,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 23:48:40,390 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-13 23:48:40,402 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:48:40,403 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:48:40,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:40,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 23:48:40,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:40,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532404666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:40,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:40,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-04-13 23:48:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099057623] [2025-04-13 23:48:40,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:40,834 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 23:48:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:40,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 23:48:40,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:48:40,835 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:40,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 133 transitions, 3020 flow. Second operand has 35 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:40,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:40,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:40,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:42,328 INFO L116 PetriNetUnfolderBase]: 2137/3666 cut-off events. [2025-04-13 23:48:42,328 INFO L117 PetriNetUnfolderBase]: For 566288/566288 co-relation queries the response was YES. [2025-04-13 23:48:42,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44569 conditions, 3666 events. 2137/3666 cut-off events. For 566288/566288 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 16670 event pairs, 399 based on Foata normal form. 153/2829 useless extension candidates. Maximal degree in co-relation 44477. Up to 1483 conditions per place. [2025-04-13 23:48:42,359 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 190 selfloop transitions, 99 changer transitions 187/476 dead transitions. [2025-04-13 23:48:42,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 476 transitions, 13763 flow [2025-04-13 23:48:42,361 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-04-13 23:48:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-04-13 23:48:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 486 transitions. [2025-04-13 23:48:42,362 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42077922077922075 [2025-04-13 23:48:42,362 INFO L175 Difference]: Start difference. First operand has 200 places, 133 transitions, 3020 flow. Second operand 55 states and 486 transitions. [2025-04-13 23:48:42,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 476 transitions, 13763 flow [2025-04-13 23:48:42,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 476 transitions, 10058 flow, removed 1813 selfloop flow, removed 29 redundant places. [2025-04-13 23:48:42,854 INFO L231 Difference]: Finished difference. Result has 248 places, 175 transitions, 3919 flow [2025-04-13 23:48:42,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3919, PETRI_PLACES=248, PETRI_TRANSITIONS=175} [2025-04-13 23:48:42,854 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 226 predicate places. [2025-04-13 23:48:42,854 INFO L485 AbstractCegarLoop]: Abstraction has has 248 places, 175 transitions, 3919 flow [2025-04-13 23:48:42,855 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:42,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:42,855 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:42,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 23:48:43,055 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:43,055 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:43,056 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -44731370, now seen corresponding path program 5 times [2025-04-13 23:48:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:43,056 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138630260] [2025-04-13 23:48:43,056 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:48:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:43,060 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 8 equivalence classes. [2025-04-13 23:48:43,064 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:48:43,064 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 23:48:43,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:43,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:43,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138630260] [2025-04-13 23:48:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138630260] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:43,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850110787] [2025-04-13 23:48:43,413 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:48:43,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:43,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:43,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:43,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 23:48:43,456 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 8 equivalence classes. [2025-04-13 23:48:43,469 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:48:43,470 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 23:48:43,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:43,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 23:48:43,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:43,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850110787] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:43,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:43,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2025-04-13 23:48:43,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703012658] [2025-04-13 23:48:43,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:43,857 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 23:48:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:43,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 23:48:43,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:48:43,858 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:43,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 175 transitions, 3919 flow. Second operand has 36 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:43,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:43,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:43,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:45,755 INFO L116 PetriNetUnfolderBase]: 2686/4746 cut-off events. [2025-04-13 23:48:45,755 INFO L117 PetriNetUnfolderBase]: For 948080/948080 co-relation queries the response was YES. [2025-04-13 23:48:45,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59999 conditions, 4746 events. 2686/4746 cut-off events. For 948080/948080 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23488 event pairs, 181 based on Foata normal form. 153/3555 useless extension candidates. Maximal degree in co-relation 59892. Up to 1370 conditions per place. [2025-04-13 23:48:45,796 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 180 selfloop transitions, 191 changer transitions 195/566 dead transitions. [2025-04-13 23:48:45,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 566 transitions, 16481 flow [2025-04-13 23:48:45,798 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-04-13 23:48:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-04-13 23:48:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 541 transitions. [2025-04-13 23:48:45,799 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42232630757220924 [2025-04-13 23:48:45,799 INFO L175 Difference]: Start difference. First operand has 248 places, 175 transitions, 3919 flow. Second operand 61 states and 541 transitions. [2025-04-13 23:48:45,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 566 transitions, 16481 flow [2025-04-13 23:48:46,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 566 transitions, 13955 flow, removed 1228 selfloop flow, removed 31 redundant places. [2025-04-13 23:48:46,828 INFO L231 Difference]: Finished difference. Result has 296 places, 236 transitions, 5944 flow [2025-04-13 23:48:46,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=5944, PETRI_PLACES=296, PETRI_TRANSITIONS=236} [2025-04-13 23:48:46,829 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 274 predicate places. [2025-04-13 23:48:46,829 INFO L485 AbstractCegarLoop]: Abstraction has has 296 places, 236 transitions, 5944 flow [2025-04-13 23:48:46,829 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:46,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:46,829 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:46,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 23:48:47,030 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:47,030 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:47,031 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash -510179354, now seen corresponding path program 6 times [2025-04-13 23:48:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:47,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994103520] [2025-04-13 23:48:47,031 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:48:47,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:47,036 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 10 equivalence classes. [2025-04-13 23:48:47,043 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:48:47,043 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-04-13 23:48:47,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:47,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:47,344 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994103520] [2025-04-13 23:48:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994103520] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:47,344 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031206761] [2025-04-13 23:48:47,344 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:48:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:47,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:47,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 23:48:47,398 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 10 equivalence classes. [2025-04-13 23:48:47,413 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:48:47,413 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-04-13 23:48:47,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:47,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 23:48:47,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:47,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:47,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031206761] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:47,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:47,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-04-13 23:48:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57237206] [2025-04-13 23:48:47,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:47,709 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 23:48:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:47,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 23:48:47,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:48:47,711 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:47,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 236 transitions, 5944 flow. Second operand has 35 states, 35 states have (on average 4.057142857142857) internal successors, (142), 35 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:47,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:47,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:47,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:50,158 INFO L116 PetriNetUnfolderBase]: 3613/6330 cut-off events. [2025-04-13 23:48:50,158 INFO L117 PetriNetUnfolderBase]: For 1883430/1883430 co-relation queries the response was YES. [2025-04-13 23:48:50,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93876 conditions, 6330 events. 3613/6330 cut-off events. For 1883430/1883430 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 32191 event pairs, 61 based on Foata normal form. 153/4701 useless extension candidates. Maximal degree in co-relation 93751. Up to 1817 conditions per place. [2025-04-13 23:48:50,226 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 226 selfloop transitions, 272 changer transitions 203/701 dead transitions. [2025-04-13 23:48:50,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 701 transitions, 23588 flow [2025-04-13 23:48:50,231 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-04-13 23:48:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2025-04-13 23:48:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 653 transitions. [2025-04-13 23:48:50,232 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4379610999329309 [2025-04-13 23:48:50,232 INFO L175 Difference]: Start difference. First operand has 296 places, 236 transitions, 5944 flow. Second operand 71 states and 653 transitions. [2025-04-13 23:48:50,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 701 transitions, 23588 flow [2025-04-13 23:48:52,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 701 transitions, 19737 flow, removed 1881 selfloop flow, removed 31 redundant places. [2025-04-13 23:48:52,302 INFO L231 Difference]: Finished difference. Result has 360 places, 297 transitions, 8461 flow [2025-04-13 23:48:52,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=8461, PETRI_PLACES=360, PETRI_TRANSITIONS=297} [2025-04-13 23:48:52,303 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 338 predicate places. [2025-04-13 23:48:52,303 INFO L485 AbstractCegarLoop]: Abstraction has has 360 places, 297 transitions, 8461 flow [2025-04-13 23:48:52,303 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.057142857142857) internal successors, (142), 35 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:52,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:52,303 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:52,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-13 23:48:52,504 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 23:48:52,504 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:48:52,505 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1436311473, now seen corresponding path program 7 times [2025-04-13 23:48:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:52,505 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66388531] [2025-04-13 23:48:52,505 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:48:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:52,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-04-13 23:48:52,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-04-13 23:48:52,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:52,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:52,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:48:52,771 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66388531] [2025-04-13 23:48:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66388531] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:48:52,771 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671277898] [2025-04-13 23:48:52,772 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:48:52,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:48:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:52,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:48:52,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 23:48:52,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-04-13 23:48:52,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-04-13 23:48:52,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:52,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:48:52,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 23:48:52,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:48:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:52,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:48:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:48:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671277898] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:48:53,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:48:53,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2025-04-13 23:48:53,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473143142] [2025-04-13 23:48:53,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:48:53,215 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:48:53,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:48:53,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:48:53,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:48:53,216 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:48:53,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 297 transitions, 8461 flow. Second operand has 46 states, 46 states have (on average 4.021739130434782) internal successors, (185), 46 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:48:53,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:48:53,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:48:53,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:48:57,828 INFO L116 PetriNetUnfolderBase]: 5089/8877 cut-off events. [2025-04-13 23:48:57,828 INFO L117 PetriNetUnfolderBase]: For 4105979/4105979 co-relation queries the response was YES. [2025-04-13 23:48:57,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157753 conditions, 8877 events. 5089/8877 cut-off events. For 4105979/4105979 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 45233 event pairs, 29 based on Foata normal form. 324/6705 useless extension candidates. Maximal degree in co-relation 157602. Up to 2564 conditions per place. [2025-04-13 23:48:57,914 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 314 selfloop transitions, 386 changer transitions 329/1029 dead transitions. [2025-04-13 23:48:57,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1029 transitions, 42715 flow [2025-04-13 23:48:57,915 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-04-13 23:48:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-04-13 23:48:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 973 transitions. [2025-04-13 23:48:57,916 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4371069182389937 [2025-04-13 23:48:57,916 INFO L175 Difference]: Start difference. First operand has 360 places, 297 transitions, 8461 flow. Second operand 106 states and 973 transitions. [2025-04-13 23:48:57,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 1029 transitions, 42715 flow [2025-04-13 23:49:02,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1029 transitions, 34099 flow, removed 4215 selfloop flow, removed 36 redundant places. [2025-04-13 23:49:02,236 INFO L231 Difference]: Finished difference. Result has 477 places, 411 transitions, 13627 flow [2025-04-13 23:49:02,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=6061, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=13627, PETRI_PLACES=477, PETRI_TRANSITIONS=411} [2025-04-13 23:49:02,237 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 455 predicate places. [2025-04-13 23:49:02,237 INFO L485 AbstractCegarLoop]: Abstraction has has 477 places, 411 transitions, 13627 flow [2025-04-13 23:49:02,237 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.021739130434782) internal successors, (185), 46 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:02,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:49:02,237 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:49:02,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 23:49:02,438 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 23:49:02,438 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:49:02,439 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:49:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1550015625, now seen corresponding path program 8 times [2025-04-13 23:49:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:49:02,439 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839511649] [2025-04-13 23:49:02,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:49:02,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:49:02,444 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-04-13 23:49:02,456 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-04-13 23:49:02,456 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:49:02,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:03,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:49:03,294 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839511649] [2025-04-13 23:49:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839511649] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:49:03,294 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983278217] [2025-04-13 23:49:03,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:49:03,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:49:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:49:03,296 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:49:03,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 23:49:03,329 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-04-13 23:49:03,354 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-04-13 23:49:03,354 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:49:03,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:03,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 23:49:03,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:49:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:03,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:49:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:04,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983278217] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:49:04,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:49:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 80 [2025-04-13 23:49:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777211556] [2025-04-13 23:49:04,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:49:04,084 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-04-13 23:49:04,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:49:04,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-04-13 23:49:04,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1506, Invalid=5136, Unknown=0, NotChecked=0, Total=6642 [2025-04-13 23:49:04,086 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:49:04,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 411 transitions, 13627 flow. Second operand has 82 states, 82 states have (on average 4.012195121951219) internal successors, (329), 82 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:04,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:49:04,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:49:04,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:49:09,570 INFO L116 PetriNetUnfolderBase]: 5611/9759 cut-off events. [2025-04-13 23:49:09,570 INFO L117 PetriNetUnfolderBase]: For 6208147/6208147 co-relation queries the response was YES. [2025-04-13 23:49:09,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183803 conditions, 9759 events. 5611/9759 cut-off events. For 6208147/6208147 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 49348 event pairs, 25 based on Foata normal form. 36/7059 useless extension candidates. Maximal degree in co-relation 183605. Up to 2650 conditions per place. [2025-04-13 23:49:09,698 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 311 selfloop transitions, 454 changer transitions 179/944 dead transitions. [2025-04-13 23:49:09,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 944 transitions, 38220 flow [2025-04-13 23:49:09,699 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-04-13 23:49:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2025-04-13 23:49:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 775 transitions. [2025-04-13 23:49:09,700 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.429125138427464 [2025-04-13 23:49:09,700 INFO L175 Difference]: Start difference. First operand has 477 places, 411 transitions, 13627 flow. Second operand 86 states and 775 transitions. [2025-04-13 23:49:09,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 944 transitions, 38220 flow [2025-04-13 23:49:23,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 944 transitions, 27853 flow, removed 5029 selfloop flow, removed 54 redundant places. [2025-04-13 23:49:23,403 INFO L231 Difference]: Finished difference. Result has 497 places, 483 transitions, 11861 flow [2025-04-13 23:49:23,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=8687, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=11861, PETRI_PLACES=497, PETRI_TRANSITIONS=483} [2025-04-13 23:49:23,404 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 475 predicate places. [2025-04-13 23:49:23,404 INFO L485 AbstractCegarLoop]: Abstraction has has 497 places, 483 transitions, 11861 flow [2025-04-13 23:49:23,404 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.012195121951219) internal successors, (329), 82 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:23,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:49:23,404 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:49:23,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 23:49:23,604 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 23:49:23,605 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:49:23,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:49:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash -958426682, now seen corresponding path program 9 times [2025-04-13 23:49:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:49:23,606 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559444742] [2025-04-13 23:49:23,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:49:23,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:49:23,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 88 statements into 38 equivalence classes. [2025-04-13 23:49:23,638 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:49:23,638 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2025-04-13 23:49:23,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:49:24,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559444742] [2025-04-13 23:49:24,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559444742] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:49:24,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017570953] [2025-04-13 23:49:24,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:49:24,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:49:24,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:49:24,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:49:24,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 23:49:24,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 88 statements into 38 equivalence classes. [2025-04-13 23:49:24,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:49:24,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2025-04-13 23:49:24,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:24,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 23:49:24,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:49:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 1 proven. 1082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:24,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:49:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:24,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017570953] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:49:24,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:49:24,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-04-13 23:49:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502438461] [2025-04-13 23:49:24,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:49:24,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:49:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:49:24,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:49:24,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:49:24,861 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:49:24,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 483 transitions, 11861 flow. Second operand has 46 states, 46 states have (on average 3.9782608695652173) internal successors, (183), 46 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:24,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:49:24,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:49:24,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:49:29,722 INFO L116 PetriNetUnfolderBase]: 5647/9840 cut-off events. [2025-04-13 23:49:29,722 INFO L117 PetriNetUnfolderBase]: For 4984543/4984543 co-relation queries the response was YES. [2025-04-13 23:49:29,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159341 conditions, 9840 events. 5647/9840 cut-off events. For 4984543/4984543 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 49835 event pairs, 25 based on Foata normal form. 27/7101 useless extension candidates. Maximal degree in co-relation 159154. Up to 2680 conditions per place. [2025-04-13 23:49:29,860 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 320 selfloop transitions, 461 changer transitions 177/958 dead transitions. [2025-04-13 23:49:29,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 958 transitions, 30202 flow [2025-04-13 23:49:29,860 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-04-13 23:49:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2025-04-13 23:49:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 789 transitions. [2025-04-13 23:49:29,862 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42694805194805197 [2025-04-13 23:49:29,862 INFO L175 Difference]: Start difference. First operand has 497 places, 483 transitions, 11861 flow. Second operand 88 states and 789 transitions. [2025-04-13 23:49:29,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 958 transitions, 30202 flow [2025-04-13 23:49:41,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 958 transitions, 28219 flow, removed 839 selfloop flow, removed 37 redundant places. [2025-04-13 23:49:41,306 INFO L231 Difference]: Finished difference. Result has 549 places, 490 transitions, 12000 flow [2025-04-13 23:49:41,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10476, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=12000, PETRI_PLACES=549, PETRI_TRANSITIONS=490} [2025-04-13 23:49:41,307 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 527 predicate places. [2025-04-13 23:49:41,307 INFO L485 AbstractCegarLoop]: Abstraction has has 549 places, 490 transitions, 12000 flow [2025-04-13 23:49:41,307 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.9782608695652173) internal successors, (183), 46 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:41,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:49:41,308 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:49:41,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-13 23:49:41,508 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-13 23:49:41,508 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:49:41,510 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:49:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -947701922, now seen corresponding path program 10 times [2025-04-13 23:49:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:49:41,510 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759956128] [2025-04-13 23:49:41,510 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:49:41,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:49:41,514 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 88 statements into 2 equivalence classes. [2025-04-13 23:49:41,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:49:41,524 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:49:41,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:42,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:49:42,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759956128] [2025-04-13 23:49:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759956128] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:49:42,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528293548] [2025-04-13 23:49:42,147 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:49:42,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:49:42,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:49:42,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:49:42,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 23:49:42,180 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 88 statements into 2 equivalence classes. [2025-04-13 23:49:42,200 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:49:42,201 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:49:42,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:42,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 23:49:42,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:49:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:42,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:49:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528293548] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:49:42,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:49:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 43 [2025-04-13 23:49:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702682503] [2025-04-13 23:49:42,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:49:42,685 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-04-13 23:49:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:49:42,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-04-13 23:49:42,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 23:49:42,686 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:49:42,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 490 transitions, 12000 flow. Second operand has 45 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 45 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:42,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:49:42,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:49:42,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:49:47,249 INFO L116 PetriNetUnfolderBase]: 5818/10128 cut-off events. [2025-04-13 23:49:47,249 INFO L117 PetriNetUnfolderBase]: For 5192191/5192191 co-relation queries the response was YES. [2025-04-13 23:49:47,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166013 conditions, 10128 events. 5818/10128 cut-off events. For 5192191/5192191 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 51145 event pairs, 43 based on Foata normal form. 27/7311 useless extension candidates. Maximal degree in co-relation 165824. Up to 2758 conditions per place. [2025-04-13 23:49:47,410 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 329 selfloop transitions, 469 changer transitions 173/971 dead transitions. [2025-04-13 23:49:47,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 971 transitions, 30951 flow [2025-04-13 23:49:47,414 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-04-13 23:49:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2025-04-13 23:49:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 789 transitions. [2025-04-13 23:49:47,415 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4318555008210181 [2025-04-13 23:49:47,415 INFO L175 Difference]: Start difference. First operand has 549 places, 490 transitions, 12000 flow. Second operand 87 states and 789 transitions. [2025-04-13 23:49:47,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 971 transitions, 30951 flow [2025-04-13 23:49:57,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 971 transitions, 29367 flow, removed 346 selfloop flow, removed 83 redundant places. [2025-04-13 23:49:57,218 INFO L231 Difference]: Finished difference. Result has 556 places, 498 transitions, 12499 flow [2025-04-13 23:49:57,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10618, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=12499, PETRI_PLACES=556, PETRI_TRANSITIONS=498} [2025-04-13 23:49:57,219 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 534 predicate places. [2025-04-13 23:49:57,219 INFO L485 AbstractCegarLoop]: Abstraction has has 556 places, 498 transitions, 12499 flow [2025-04-13 23:49:57,220 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 45 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:57,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:49:57,220 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:49:57,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-13 23:49:57,420 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 23:49:57,420 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:49:57,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:49:57,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1770614690, now seen corresponding path program 11 times [2025-04-13 23:49:57,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:49:57,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193502364] [2025-04-13 23:49:57,422 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:49:57,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:49:57,426 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 88 statements into 39 equivalence classes. [2025-04-13 23:49:57,440 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:49:57,440 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2025-04-13 23:49:57,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:49:58,094 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193502364] [2025-04-13 23:49:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193502364] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:49:58,094 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210721122] [2025-04-13 23:49:58,094 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:49:58,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:49:58,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:49:58,096 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:49:58,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 23:49:58,127 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 88 statements into 39 equivalence classes. [2025-04-13 23:49:58,152 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:49:58,152 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2025-04-13 23:49:58,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:58,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 23:49:58,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:49:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:58,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:49:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:58,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210721122] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:49:58,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:49:58,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-04-13 23:49:58,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596101304] [2025-04-13 23:49:58,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:49:58,704 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:49:58,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:49:58,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:49:58,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1599, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:49:58,705 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:49:58,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 498 transitions, 12499 flow. Second operand has 46 states, 46 states have (on average 3.9565217391304346) internal successors, (182), 46 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:49:58,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:49:58,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:49:58,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:50:03,768 INFO L116 PetriNetUnfolderBase]: 5755/10038 cut-off events. [2025-04-13 23:50:03,768 INFO L117 PetriNetUnfolderBase]: For 5361200/5361200 co-relation queries the response was YES. [2025-04-13 23:50:03,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166069 conditions, 10038 events. 5755/10038 cut-off events. For 5361200/5361200 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 50832 event pairs, 25 based on Foata normal form. 45/7257 useless extension candidates. Maximal degree in co-relation 165876. Up to 2728 conditions per place. [2025-04-13 23:50:03,896 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 319 selfloop transitions, 472 changer transitions 181/972 dead transitions. [2025-04-13 23:50:03,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 972 transitions, 31455 flow [2025-04-13 23:50:03,896 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-04-13 23:50:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2025-04-13 23:50:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 791 transitions. [2025-04-13 23:50:03,898 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2025-04-13 23:50:03,898 INFO L175 Difference]: Start difference. First operand has 556 places, 498 transitions, 12499 flow. Second operand 88 states and 791 transitions. [2025-04-13 23:50:03,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 972 transitions, 31455 flow [2025-04-13 23:50:17,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 972 transitions, 29289 flow, removed 608 selfloop flow, removed 85 redundant places. [2025-04-13 23:50:17,347 INFO L231 Difference]: Finished difference. Result has 560 places, 499 transitions, 12097 flow [2025-04-13 23:50:17,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10939, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=12097, PETRI_PLACES=560, PETRI_TRANSITIONS=499} [2025-04-13 23:50:17,348 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 538 predicate places. [2025-04-13 23:50:17,348 INFO L485 AbstractCegarLoop]: Abstraction has has 560 places, 499 transitions, 12097 flow [2025-04-13 23:50:17,349 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.9565217391304346) internal successors, (182), 46 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:50:17,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:50:17,349 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:50:17,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 23:50:17,549 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:50:17,550 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:50:17,551 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:50:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1352967802, now seen corresponding path program 12 times [2025-04-13 23:50:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:50:17,551 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329793321] [2025-04-13 23:50:17,551 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:50:17,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:50:17,557 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 88 statements into 38 equivalence classes. [2025-04-13 23:50:17,584 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:50:17,584 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2025-04-13 23:50:17,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:50:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:50:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:50:18,166 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329793321] [2025-04-13 23:50:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329793321] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:50:18,167 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447130254] [2025-04-13 23:50:18,167 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:50:18,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:50:18,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:50:18,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:50:18,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 23:50:18,203 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 88 statements into 38 equivalence classes. [2025-04-13 23:50:18,232 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) and asserted 88 of 88 statements. [2025-04-13 23:50:18,232 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2025-04-13 23:50:18,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:50:18,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 23:50:18,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:50:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:50:18,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:50:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:50:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447130254] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:50:19,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:50:19,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 85 [2025-04-13 23:50:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607753280] [2025-04-13 23:50:19,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:50:19,024 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2025-04-13 23:50:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:50:19,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2025-04-13 23:50:19,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=5742, Unknown=0, NotChecked=0, Total=7482 [2025-04-13 23:50:19,027 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:50:19,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 499 transitions, 12097 flow. Second operand has 87 states, 87 states have (on average 4.022988505747127) internal successors, (350), 87 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:50:19,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:50:19,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:50:19,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:50:24,791 INFO L116 PetriNetUnfolderBase]: 5890/10245 cut-off events. [2025-04-13 23:50:24,791 INFO L117 PetriNetUnfolderBase]: For 5489788/5489788 co-relation queries the response was YES. [2025-04-13 23:50:24,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170549 conditions, 10245 events. 5890/10245 cut-off events. For 5489788/5489788 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 51818 event pairs, 79 based on Foata normal form. 36/7407 useless extension candidates. Maximal degree in co-relation 170356. Up to 2764 conditions per place. [2025-04-13 23:50:24,928 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 344 selfloop transitions, 473 changer transitions 191/1008 dead transitions. [2025-04-13 23:50:24,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 1008 transitions, 32810 flow [2025-04-13 23:50:24,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2025-04-13 23:50:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2025-04-13 23:50:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 829 transitions. [2025-04-13 23:50:24,930 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42908902691511386 [2025-04-13 23:50:24,930 INFO L175 Difference]: Start difference. First operand has 560 places, 499 transitions, 12097 flow. Second operand 92 states and 829 transitions. [2025-04-13 23:50:24,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 1008 transitions, 32810 flow [2025-04-13 23:50:37,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 1008 transitions, 31248 flow, removed 339 selfloop flow, removed 84 redundant places. [2025-04-13 23:50:37,155 INFO L231 Difference]: Finished difference. Result has 574 places, 508 transitions, 12960 flow [2025-04-13 23:50:37,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10845, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=12960, PETRI_PLACES=574, PETRI_TRANSITIONS=508} [2025-04-13 23:50:37,156 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 552 predicate places. [2025-04-13 23:50:37,156 INFO L485 AbstractCegarLoop]: Abstraction has has 574 places, 508 transitions, 12960 flow [2025-04-13 23:50:37,157 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.022988505747127) internal successors, (350), 87 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:50:37,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:50:37,157 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:50:37,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-13 23:50:37,357 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:50:37,358 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:50:37,359 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:50:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 164204229, now seen corresponding path program 13 times [2025-04-13 23:50:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:50:37,359 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181365323] [2025-04-13 23:50:37,359 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:50:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:50:37,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-04-13 23:50:37,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-04-13 23:50:37,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:50:37,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:50:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 1084 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 23:50:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:50:37,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181365323] [2025-04-13 23:50:37,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181365323] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:50:37,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098164199] [2025-04-13 23:50:37,595 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:50:37,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:50:37,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:50:37,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:50:37,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 23:50:37,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-04-13 23:50:37,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-04-13 23:50:37,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:50:37,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:50:37,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 23:50:37,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:50:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 1141 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 23:50:37,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-13 23:50:37,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098164199] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:50:37,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-13 23:50:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [22] total 23 [2025-04-13 23:50:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751715741] [2025-04-13 23:50:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:50:37,708 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 23:50:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:50:37,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 23:50:37,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2025-04-13 23:50:37,709 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 23:50:37,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 508 transitions, 12960 flow. Second operand has 22 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:50:37,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:50:37,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 23:50:37,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:51:08,172 INFO L116 PetriNetUnfolderBase]: 55665/87966 cut-off events. [2025-04-13 23:51:08,172 INFO L117 PetriNetUnfolderBase]: For 48870167/48870167 co-relation queries the response was YES. [2025-04-13 23:51:10,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444791 conditions, 87966 events. 55665/87966 cut-off events. For 48870167/48870167 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 632902 event pairs, 552 based on Foata normal form. 0/62601 useless extension candidates. Maximal degree in co-relation 1444599. Up to 24090 conditions per place. [2025-04-13 23:51:10,396 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 0 selfloop transitions, 0 changer transitions 5876/5876 dead transitions. [2025-04-13 23:51:10,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 5876 transitions, 150928 flow [2025-04-13 23:51:10,397 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 23:51:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-13 23:51:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 275 transitions. [2025-04-13 23:51:10,398 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-04-13 23:51:10,398 INFO L175 Difference]: Start difference. First operand has 574 places, 508 transitions, 12960 flow. Second operand 22 states and 275 transitions. [2025-04-13 23:51:10,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 5876 transitions, 150928 flow [2025-04-13 23:56:10,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 5876 transitions, 130933 flow, removed 4332 selfloop flow, removed 90 redundant places. [2025-04-13 23:56:10,620 INFO L231 Difference]: Finished difference. Result has 499 places, 0 transitions, 0 flow [2025-04-13 23:56:10,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=9820, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=499, PETRI_TRANSITIONS=0} [2025-04-13 23:56:10,621 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 477 predicate places. [2025-04-13 23:56:10,621 INFO L485 AbstractCegarLoop]: Abstraction has has 499 places, 0 transitions, 0 flow [2025-04-13 23:56:10,621 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:56:10,624 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 23:56:10,624 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 23:56:10,624 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 23:56:10,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 23:56:10,825 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:56:10,825 INFO L422 BasicCegarLoop]: Path program histogram: [13, 3, 2, 2, 1] [2025-04-13 23:56:10,828 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 23:56:10,828 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 23:56:10,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 11:56:10 BasicIcfg [2025-04-13 23:56:10,831 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 23:56:10,832 INFO L158 Benchmark]: Toolchain (without parser) took 459964.08ms. Allocated memory was 155.2MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 106.8MB in the beginning and 1.0GB in the end (delta: -893.2MB). Peak memory consumption was 5.9GB. Max. memory is 8.0GB. [2025-04-13 23:56:10,832 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:56:10,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.76ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 83.8MB in the end (delta: 22.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 23:56:10,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.16ms. Allocated memory is still 155.2MB. Free memory was 83.8MB in the beginning and 82.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:56:10,832 INFO L158 Benchmark]: Boogie Preprocessor took 40.06ms. Allocated memory is still 155.2MB. Free memory was 82.2MB in the beginning and 80.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:56:10,832 INFO L158 Benchmark]: IcfgBuilder took 350.42ms. Allocated memory is still 155.2MB. Free memory was 80.6MB in the beginning and 59.7MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 23:56:10,832 INFO L158 Benchmark]: TraceAbstraction took 459134.53ms. Allocated memory was 155.2MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 59.2MB in the beginning and 1.0GB in the end (delta: -940.9MB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. [2025-04-13 23:56:10,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 405.76ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 83.8MB in the end (delta: 22.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.16ms. Allocated memory is still 155.2MB. Free memory was 83.8MB in the beginning and 82.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 40.06ms. Allocated memory is still 155.2MB. Free memory was 82.2MB in the beginning and 80.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 350.42ms. Allocated memory is still 155.2MB. Free memory was 80.6MB in the beginning and 59.7MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 459134.53ms. Allocated memory was 155.2MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 59.2MB in the beginning and 1.0GB in the end (delta: -940.9MB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 33 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 459.1s, OverallIterations: 21, TraceHistogramMax: 21, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 443.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16309 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16309 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 859 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11558 IncrementalHoareTripleChecker+Invalid, 12417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 859 mSolverCounterUnsat, 0 mSDtfsCounter, 11558 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2609 GetRequests, 1101 SyntacticMatches, 118 SemanticMatches, 1390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52014 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13627occurred in iteration=15, InterpolantAutomatonStates: 959, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 1588 NumberOfCodeBlocks, 1588 NumberOfCodeBlocksAsserted, 312 NumberOfCheckSat, 2210 ConstructedInterpolants, 0 QuantifiedInterpolants, 7911 SizeOfPredicates, 294 NumberOfNonLiveVariables, 2700 ConjunctsInSsa, 392 ConjunctsInUnsatCore, 50 InterpolantComputations, 7 PerfectInterpolantSequences, 2265/19642 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 23:56:10,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...